The obvious question is what kind of barbell row are we talking about here. There seems to be all kinds of rows on a spectrum: from almost vertical torso e.g. Yates Row to almost horizontal ala Pendlay Ro. From super strict may-as-well-do-a-chest-supported-row variations to deadlifting and shrug as hard as possible at the top.
What I’m thinking of is something similar to what is suggested by these powerlifters:
Ed Coan (The GOAT)
Cailler Woolam (420.5kg/927lbs ATWR @ 220)
What they propose is kind of a middle ground of all the barbell rows. Bit of momentum to start the weight moving but not so much that you end up looking like you’re are trying to poorly muscle clean the weight. Torso angle and weight selection such that you get a nice full ROM as opposed to a little jerky shrug.
Kind of like putting the romanian deadlift and a row toegther, getting the benefits of both: Trains the back muscles involved in DL which are usually isometrically contracted and stretched, dynamically through full ROM with stretch and significant time under tension. Erectors are contracting isometrically and starting momentum comes from romanian deadlifting albeit in a shortened range. Relatively light loads are less taxing on recovery allowing higher volume and frequency training to facilitate hypertrophy.
I can see this movement having some utility as an accessory movement or variation in an accumulation/hypertrophy phase to build the musculature of the deadlift. However two or three different movements could be as effective if not more so.